mirror of
https://github.com/morpheus65535/bazarr
synced 2024-12-23 08:13:14 +00:00
213 lines
6.8 KiB
Python
213 lines
6.8 KiB
Python
from collections import namedtuple
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from difflib import SequenceMatcher
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import io
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import logging
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import os
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import re
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import tempfile
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from typing import Iterable, Union
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import zipfile
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from guessit import guessit
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import pysubs2
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import rarfile
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from subliminal.subtitle import fix_line_ending
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from subliminal_patch.exceptions import MustGetBlacklisted
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from subliminal_patch.core import Episode
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from subliminal_patch.subtitle import guess_matches
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from ._agent_list import FIRST_THOUSAND_OR_SO_USER_AGENTS
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USER_AGENTS = FIRST_THOUSAND_OR_SO_USER_AGENTS
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logger = logging.getLogger(__name__)
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_MatchingSub = namedtuple("_MatchingSub", ("file", "priority", "context"))
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def blacklist_on(*exc_types):
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"Raise MustGetBlacklisted if any of the exc_types are raised."
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def decorator(method):
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def wrapper(self, subtitle):
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try:
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return method(self, subtitle)
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except exc_types:
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logger.error("Sending blacklist exception", exc_info=True)
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raise MustGetBlacklisted(subtitle.id, subtitle.media_type)
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return wrapper
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return decorator
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def _get_matching_sub(
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sub_names, forced=False, episode=None, episode_title=None, **kwargs
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):
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guess_options = {"single_value": True}
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if episode is not None:
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guess_options["type"] = "episode" # type: ignore
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matching_subs = []
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for sub_name in sub_names:
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if not forced and os.path.splitext(sub_name.lower())[0].endswith("forced"):
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logger.debug("Ignoring forced subtitle: %s", sub_name)
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continue
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# If it's a movie then get the first subtitle
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if episode is None and episode_title is None:
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logger.debug("Movie subtitle found: %s", sub_name)
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matching_subs.append(_MatchingSub(sub_name, 2, "Movie subtitle"))
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break
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guess = guessit(sub_name, options=guess_options)
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matched_episode_num = guess.get("episode")
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if matched_episode_num:
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logger.debug("No episode number found in file: %s", sub_name)
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if episode_title is not None:
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from_name = _analize_sub_name(sub_name, episode_title)
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if from_name is not None:
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matching_subs.append(from_name)
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if episode == matched_episode_num:
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logger.debug("Episode matched from number: %s", sub_name)
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matching_subs.append(_MatchingSub(sub_name, 2, "Episode number matched"))
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if matching_subs:
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matching_subs.sort(key=lambda x: x.priority, reverse=True)
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logger.debug("Matches: %s", matching_subs)
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return matching_subs[0].file
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else:
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logger.debug("Nothing matched")
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return None
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def _analize_sub_name(sub_name: str, title_):
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titles = re.split(r"[.-]", os.path.splitext(sub_name)[0])
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for title in titles:
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title = title.strip()
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ratio = SequenceMatcher(None, title, title_).ratio()
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if ratio > 0.85:
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logger.debug(
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"Episode title matched: '%s' -> '%s' [%s]", title, sub_name, ratio
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)
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# Avoid false positives with short titles
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if len(title_) > 4 and ratio >= 0.98:
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return _MatchingSub(sub_name, 3, "Perfect title ratio")
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return _MatchingSub(sub_name, 1, "Normal title ratio")
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logger.debug("No episode title matched from file: %s", sub_name)
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return None
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def get_subtitle_from_archive(
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archive, forced=False, episode=None, get_first_subtitle=False, **kwargs
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):
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"Get subtitle from Rarfile/Zipfile object. Return None if nothing is found."
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subs_in_archive = [
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name
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for name in archive.namelist()
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if name.endswith((".srt", ".sub", ".ssa", ".ass"))
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]
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if not subs_in_archive:
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logger.info("No subtitles found in archive")
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return None
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logger.debug("Subtitles in archive: %s", subs_in_archive)
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if len(subs_in_archive) == 1 or get_first_subtitle:
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logger.debug("Getting first subtitle in archive: %s", subs_in_archive)
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return fix_line_ending(archive.read(subs_in_archive[0]))
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matching_sub = _get_matching_sub(subs_in_archive, forced, episode, **kwargs)
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if matching_sub is not None:
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logger.info("Using %s from archive", matching_sub)
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return fix_line_ending(archive.read(matching_sub))
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logger.debug("No subtitle found in archive")
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return None
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def is_episode(content):
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return "episode" in guessit(content, {"type": "episode"})
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_ENCS = ("utf-8", "ascii", "iso-8859-1", "iso-8859-2", "iso-8859-5", "cp1252")
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def _zip_from_subtitle_file(content):
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with tempfile.NamedTemporaryFile(prefix="spsub", suffix=".srt") as tmp_f:
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tmp_f.write(content)
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sub = None
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for enc in _ENCS:
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try:
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logger.debug("Trying %s encoding", enc)
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sub = pysubs2.load(tmp_f.name, encoding=enc)
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except Exception as error:
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logger.debug("%s: %s", type(error).__name__, error)
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continue
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else:
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break
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if sub is not None:
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logger.debug("Identified subtitle file: %s", sub)
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zip_obj = zipfile.ZipFile(io.BytesIO(), mode="x")
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zip_obj.write(tmp_f.name, os.path.basename(tmp_f.name))
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return zip_obj
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logger.debug("Couldn't load subtitle file")
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return None
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def get_archive_from_bytes(content: bytes):
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"""Get RarFile/ZipFile object from bytes. A ZipFile instance will be returned
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if a subtitle-like stream is found. Return None if something else is found."""
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archive_stream = io.BytesIO(content)
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if rarfile.is_rarfile(archive_stream):
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logger.debug("Identified rar archive")
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return rarfile.RarFile(archive_stream)
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elif zipfile.is_zipfile(archive_stream):
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logger.debug("Identified zip archive")
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return zipfile.ZipFile(archive_stream)
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logger.debug("No compression format found. Trying with subtitle-like files")
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return _zip_from_subtitle_file(content)
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def update_matches(
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matches,
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video,
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release_info: Union[str, Iterable[str]],
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split="\n",
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**guessit_options,
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):
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"""Update matches set from release info string or Iterable.
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Use the split parameter to iterate over the set delimiter; set None to avoid split.
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"""
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guessit_options["type"] = "episode" if isinstance(video, Episode) else "movie"
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logger.debug("Guessit options to update matches: %s", guessit_options)
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if isinstance(release_info, str):
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release_info = release_info.split(split)
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for release in release_info:
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for release_split in release.split(split):
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logger.debug("Updating matches from release info: %s", release)
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matches |= guess_matches(
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video, guessit(release_split.strip(), guessit_options)
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)
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logger.debug("New matches: %s", matches)
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return matches
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